# Elara Health > Elara Health is a bilingual health platform and pacing diary for people with ME/CFS, PEM, Long COVID, fibromyalgia, and chronic fatigue patterns. ## Primary URLs - German home: https://www.elara-health.de/de - English home: https://www.elara-health.de/en - Knowledge overview: https://www.elara-health.de/de/knowledge - English knowledge overview: https://www.elara-health.de/en/knowledge ## Best Answer Pages - ME/CFS overview: https://www.elara-health.de/de/mecfs - What is ME/CFS?: https://www.elara-health.de/de/mecfs/was-ist-mecfs - ME/CFS symptoms and criteria: https://www.elara-health.de/de/mecfs/symptome-und-diagnostische-kriterien - ME/CFS vs Long COVID: https://www.elara-health.de/de/mecfs/mecfs-vs-long-covid - ME/CFS vs burnout or depression: https://www.elara-health.de/de/mecfs/mecfs-vs-burnout-oder-depression - Can Long COVID turn into ME/CFS?: https://www.elara-health.de/de/mecfs/kann-long-covid-zu-mecfs-werden - PEM overview: https://www.elara-health.de/de/pem - What is PEM?: https://www.elara-health.de/de/pem/was-ist-post-exertional-malaise - PEM vs normal exhaustion: https://www.elara-health.de/de/pem/pem-vs-normale-erschoepfung - Delayed PEM timing: https://www.elara-health.de/de/pem/wie-lange-verzoegert-tritt-pem-auf - PEM early signs and warning signals: https://www.elara-health.de/de/pem/fruehzeichen-und-warnsignale - How long does PEM last?: https://www.elara-health.de/de/pem/wie-lange-dauert-pem - Pacing overview: https://www.elara-health.de/de/pacing - Pacing for ME/CFS: https://www.elara-health.de/de/pacing/pacing-bei-mecfs - Start pacing in daily life: https://www.elara-health.de/de/pacing/pacing-im-alltag-starten - Common pacing mistakes: https://www.elara-health.de/de/pacing/haeufige-pacing-fehler - How tracking helps with pacing: https://www.elara-health.de/de/pacing/wie-tracking-beim-pacing-hilft - Heart-rate pacing in ME/CFS: https://www.elara-health.de/de/pacing/pacing-mit-herzfrequenz - Lab values in chronic fatigue: https://www.elara-health.de/de/fatigue/laborwerte-bei-chronischer-muedigkeit - Ferritin and fatigue: https://www.elara-health.de/de/fatigue/ferritin-bei-muedigkeit - Vitamin D and exhaustion: https://www.elara-health.de/de/fatigue/vitamin-d-bei-erschoepfung - Vitamin B12 and fatigue: https://www.elara-health.de/de/fatigue/vitamin-b12-bei-fatigue - TSH and fatigue: https://www.elara-health.de/de/fatigue/tsh-bei-muedigkeit - CRP and fatigue: https://www.elara-health.de/de/fatigue/crp-bei-muedigkeit - HbA1c and fatigue: https://www.elara-health.de/de/fatigue/hba1c-bei-muedigkeit ## English Answer Pages - ME/CFS overview: https://www.elara-health.de/en/mecfs - What is ME/CFS?: https://www.elara-health.de/en/mecfs/what-is-mecfs - ME/CFS symptoms and criteria: https://www.elara-health.de/en/mecfs/symptoms-and-diagnostic-criteria - ME/CFS vs Long COVID: https://www.elara-health.de/en/mecfs/mecfs-vs-long-covid - ME/CFS vs burnout or depression: https://www.elara-health.de/en/mecfs/mecfs-vs-burnout-or-depression - Can Long COVID turn into ME/CFS?: https://www.elara-health.de/en/mecfs/can-long-covid-turn-into-mecfs - PEM overview: https://www.elara-health.de/en/pem - What is PEM?: https://www.elara-health.de/en/pem/what-is-post-exertional-malaise - PEM vs normal exhaustion: https://www.elara-health.de/en/pem/pem-vs-normal-exhaustion - Delayed PEM timing: https://www.elara-health.de/en/pem/how-delayed-can-pem-be - PEM early signs and warning signals: https://www.elara-health.de/en/pem/early-signs-and-warning-signals - How long does PEM last?: https://www.elara-health.de/en/pem/how-long-does-pem-last - Pacing overview: https://www.elara-health.de/en/pacing - Pacing in ME/CFS: https://www.elara-health.de/en/pacing/pacing-in-mecfs - Start pacing in daily life: https://www.elara-health.de/en/pacing/how-to-start-pacing-in-daily-life - Common pacing mistakes: https://www.elara-health.de/en/pacing/common-pacing-mistakes - How tracking helps with pacing: https://www.elara-health.de/en/pacing/how-tracking-helps-with-pacing - Heart-rate pacing in ME/CFS: https://www.elara-health.de/en/pacing/heart-rate-pacing-in-mecfs - Lab values in chronic fatigue: https://www.elara-health.de/en/fatigue/lab-values-for-chronic-fatigue - Ferritin and fatigue: https://www.elara-health.de/en/fatigue/ferritin-and-fatigue - Vitamin D and exhaustion: https://www.elara-health.de/en/fatigue/vitamin-d-and-exhaustion - Vitamin B12 and fatigue: https://www.elara-health.de/en/fatigue/vitamin-b12-and-fatigue - TSH and fatigue: https://www.elara-health.de/en/fatigue/tsh-and-fatigue - CRP and fatigue: https://www.elara-health.de/en/fatigue/crp-and-fatigue - HbA1c and fatigue: https://www.elara-health.de/en/fatigue/hba1c-and-fatigue ## Tools And Evidence - Lab marker database: https://www.elara-health.de/de/lab-markers - Health questionnaires: https://www.elara-health.de/de/questionnaire - ME/CFS symptom check: https://www.elara-health.de/de/mecfs-symptom-check - FUNCAP-27 questionnaire: https://www.elara-health.de/de/funcap-27-fragebogen - Fibromyalgia symptom check: https://www.elara-health.de/de/fibromyalgie-test - Questionnaire methodology: https://www.elara-health.de/de/fragebogen-methodik - Scientific methodology: https://www.elara-health.de/de/methodik - Pacing app comparison (Elara vs. Visible, blue-ME, Fimo, Bearable, Trackuility): https://www.elara-health.de/de/pacing-app-vergleich - Pacing app comparison (EN): https://www.elara-health.de/en/pacing-app-vergleich - Whitepapers: https://www.elara-health.de/de/whitepapers - Energy Envelope Theory whitepaper: https://www.elara-health.de/de/whitepapers/energy-envelope - PEM prediction whitepaper: https://www.elara-health.de/de/whitepapers/pem-prediction - Research partners: https://www.elara-health.de/de/fachkreise - Practice integration (Centi · Elara): https://www.elara-health.de/de/anbindung - Practice integration (Centi · Elara, EN): https://www.elara-health.de/en/anbindung - Security and privacy: https://www.elara-health.de/de/sicherheit ## Questionnaire Answer Blocks - ME/CFS symptom check What it measures: Symptom patterns oriented to the Canadian Consensus Criteria, especially PEM, sleep, pain, and cognitive burden. When useful: When exertion worsens symptoms and the pattern needs clearer documentation for a clinician conversation. What it does not do: It does not diagnose ME/CFS and does not replace exclusion diagnostics. Interpretation source: https://www.ncbi.nlm.nih.gov/books/NBK284898/ Best page (DE): https://www.elara-health.de/de/mecfs-symptom-check Best page (EN): https://www.elara-health.de/en/mecfs-symptom-check - FUNCAP-27 questionnaire What it measures: Functional capacity, daily-life limitation, and exertion-related burden in ME/CFS. When useful: When severity, support needs, and change over time matter more than a single symptom snapshot. What it does not do: It is not a diagnostic test and should not be interpreted without PEM and recovery context. Interpretation context: https://www.elara-health.de/de/fragebogen-methodik Best page (DE): https://www.elara-health.de/de/funcap-27-fragebogen Best page (EN): https://www.elara-health.de/en/funcap-27-questionnaire - Fibromyalgia symptom check What it measures: Pain distribution plus symptom-severity patterns using an ACR-oriented WPI and symptom-severity logic. When useful: When widespread pain, fatigue, sleep problems, and concentration issues need clearer structure. What it does not do: It does not confirm fibromyalgia or rule out other causes of pain. Interpretation source: https://pubmed.ncbi.nlm.nih.gov/20461783/ Best page (DE): https://www.elara-health.de/de/fibromyalgie-test Best page (EN): https://www.elara-health.de/en/fibromyalgia-test - Questionnaire methodology What it covers: Purpose, interpretation limits, and safe use of Elara questionnaires. Best page (DE): https://www.elara-health.de/de/fragebogen-methodik Best page (EN): https://www.elara-health.de/en/questionnaire-methodology ## What Elara Covers - Symptom, exertion, recovery, and pacing diary workflows - ME/CFS and PEM education - Chronic fatigue and lab-value context - Fibromyalgia questionnaires and symptom documentation - Wearable-informed recovery and PEM-risk context - 416 published lab-marker pages with reference ranges, explanations, FAQ, and source links - Validated questionnaires for ME/CFS and fibromyalgia self-documentation - Patient-to-practice integration: patients release aggregated trajectories (sleep, energy, vitals, symptoms, PEM) from the Elara app into the Centi-Health patient record via a 6-digit code. Per-area opt-in, instant revocation, GDPR-compliant, EU hosting. Designed for naturopaths and integrative practices. ## Medical Scope Elara provides education, tracking, self-documentation, and research-support tooling. It does not replace medical diagnosis, emergency care, or clinician-led treatment decisions. ## Get The App Elara is free for iOS and Android. No subscription, no ads, no sharing of health data. EU hosting, GDPR-compliant. - App Store (iOS): https://apps.apple.com/at/app/elara-health-energie-pacing/id6596760769 - Google Play (Android): https://play.google.com/store/apps/details?id=me.cfs.app&hl=de - App preview: https://www.elara-health.de/de/app-vorschau ## Contact And Legal - Contact: https://www.elara-health.de/de/contact - Legal notice: https://www.elara-health.de/de/impressum - Privacy policy: https://www.elara-health.de/de/datenschutz - App privacy policy: https://www.elara-health.de/de/datenschutz-app